3,3',5’-Triiodo-L-thyronine, also known as reverse T3 (rT3), is a thyroid hormone generated by deiodination of the prohormone thyroxine. It is about 1,000-fold less active at the thyroid hormone receptors TRα and TRβ than 3,3',5-triiodo-L-thyronine (Item No. 16028) and commonly described as inactive.{28789,28791} However, high serum levels of rT3 are found in neonates and in certain conditions.{28795,28793,28790,28792} It reportedly activates TRΔα1, a native form of TRα that lacks a nuclear localization signal and functions in the cytoplasm.{28794} Through this action, rT3 initiates actin polymerization, particularly in astrocytes and neurons.{28794}
产品描述
A thyroid hormone that is about 1,000-fold less active at the thyroid hormone receptors TRα and TRβ than T3; activates TRΔα1, a native form of TRα that lacks a nuclear localization signal and functions in the cytoplasm, initiating actin polymerization